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Database Doctor

is not in the current directory a path to it has to be specified. The tool main class is com.objectdb

JPA Metamodel API

The JPA Metamodel API, which is introduced in JPA 2.0, enables examining the classes, fields and properties of the persistent object model, similarly to the Java reflection API. The main interface of the JPA Metamodel API is: Types (mainly classes) and attributes (persistent field and properties

ObjectDB 2.8 Developer's Guide

Welcome to ObjectDB for Java/JPA Developer's Guide. Here you can learn how to develop database applications using ObjectDB and JPA (Java Persistence API). The main purpose of this guide is to make you productive with ObjectDB and JPA in a short time. Guide Structure This manual is divided into

Database Connection using JPA

database connection, using a separate EntityManager instance, for every HTTP request. The main role

JPA Metamodel API

The JPA Metamodel API provides the ability to examine the persistent object model and retrieve details on managed classes and persistent fields and properties, similarly to the ability that Java reflection provides for general Java types. The Metamodel Interface The main interface of the JPA

Paths and Types in JPQL and Criteria API

expressions in the above code can be divided into two main groups: FROM variable expressions, represented by

Step 4: Run the Application

You can now run the application by right clicking the Main.java file (in the [Package Explorer] window) and selecting Run As > Java Application. The expected output in the Eclipse [Console] window, is: Total Points: 1000 Average X: 499.5 (0,0) (1,1) (2,2) (3,3) : : (998,998) (999,999

Java EE 6 JPA Tutorial - NetBeans Project

the project: Select Run > Run Main Project... (or F6). Choose or define the server and click OK

Step 2: Entity Class and Persistence Unit

that was added to the project (under Other Sources > src/main/resources > META-INF). Open

Step 5: Add a JSP Page

In this step we will add the JSP that generates the guestbook HTML output: Open the [New JSP File] dialog box by right clicking WEB-INF under src/main/webapp (in the [Package Explorer] window), selecting New > Other... > Web > JSP File and clicking Next. The parent folder should be WEB-INF

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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